Where's the fire?

[Launched]

In my example, they are, because they hit sprint after the pull.... Sprint Duration is 20 seconds out of combat and 10 seconds in combat.

DPS and healers don't enter combat until they hit an enemy or heal/buff someone in combat (the tank). They can pop sprint after the tank hits something and still get the full 20 seconds. Only bosses instantly put the entire group into combat.